feat(vscodex): add remote Codex collaboration module

aether-vscodex/web/src/runtime/request-template.ts

@@ -0,0 +1,34 @@
+export function installRequestTemplate(): HTMLTemplateElement {
+  const existing = document.getElementById("requestTemplate");
+  if (existing instanceof HTMLTemplateElement) return existing;
+
+  const template = document.createElement("template");
+  template.id = "requestTemplate";
+  template.innerHTML = `
+    <article class="request">
+      <div class="request-title"><span class="request-icon" aria-hidden="true">!</span><strong class="request-method"></strong><span class="request-risk"></span><span class="request-id"></span></div>
+      <p class="request-summary"></p>
+      <pre class="request-command"></pre>
+      <div class="request-questions"></div>
+      <label class="request-scope-wrap" hidden>
+        <span>授权范围</span>
+        <select class="request-scope">
+          <option value="turn">仅本次 turn</option>
+          <option value="session">当前会话</option>
+        </select>
+      </label>
+      <details class="request-details">
+        <summary>查看请求数据</summary>
+        <pre class="request-json"></pre>
+      </details>
+      <textarea class="request-response" rows="4" aria-label="JSON 响应"></textarea>
+      <div class="button-row request-actions">
+        <button class="primary request-allow">允许</button>
+        <button class="secondary request-deny">拒绝</button>
+        <button class="secondary request-send">发送 JSON</button>
+      </div>
+    </article>
+  `;
+  document.body.append(template);
+  return template;
+}